The French Jewish school where three children and a teacher were murdered this month has received a wave of anti-Semitic hate mail and calls, the local prosecutor said Wednesday. Michel Valet said he had received a complaint from the school and had ordered a police investigation to discover the “origin of these calls and letters and the identities of those behind them.” The Ozar Hatorah school was at the centre of a national drama on March 19, when self-declared Al-Qaeda operative Mohamed Merah pulled up on his scooter and attacked a crowd of pupils and parents waiting for class. After killing a 30-year-old religious studies teacher and his two sons aged four and five, the 23-year-old Islamic extremist pursued a seven-year-old girl onto the grounds, grabbing her and shooting her through the head. The local head of a Jewish representative group, Marc Sztulman, said the school’s email system had filled up with messages “calling for the murder of Jews or drawing a vague link with the Israeli-Palestinian conflict.” On Monday, a 12-year-old Jewish boy was beaten but not badly hurt by three unidentified teenagers in an anti-Semitic attack outside another school in the Ozar Hatorah group, this time in Paris, according to police.